The thing that comes only with age is: to not give a fuck.
When we learn that it doesn't matter we can all be little old people who are purple mohawk headed, wearing clashing neon adidas jumpsuit with zebra primted boas.
I only learned this a few weeks ago at 40 years old, now my hair is blue, both my ears are pierced and I'm a lot happier. I told my 19 year old daughter that "what will people think?" has been my mantra, now it's "fuck 'em"